摘要
China Rare Earth InformationCentre gave our deep thanks tothe kind financial support from:Dr.M.H.Beyad of SpecialityChemicals Group,Albright & Wil-son,Americas,USADr.L.Bergmans of Elsevier Se-quoia S.A.,Affiliated with Else-vier Science Publishers,Swit-zerlandNippon Mining Co.Ltd.,Plan-ning Dept.,Research & Develop-ment Group,JapanDr.John A.Pannucci of Rhone-Poulenc Basic Chemicals Co.,USANo.3 Rare Earth Factory ofBaotou Rare Earth and Steel Com-pany,ChinaHua Xin Metallurgical & Chemi-cal Company。